Grinding-machine.



G. W. BOWERS.

GRINDING MACHINE.

APPLICATION FILED D1802, 1912.

Patented Sept. 9, 1913.

5 SHEETBSHEET l Mil 716536 s G. W. BOWERS.

GRINDING MACHINE.

APPLICATION FILED nnctz, 1912.

Patented Sept. 9, 1913.

5 SHEETS-SHEET Z jfialgra in r. Geo. 2 Boi C70 G. W. BOWERS. GRINDING MACHINE.

APPLICATION FILED no.2, 1912.

. a 3 Wm .z t am 5 m m a k 9. r w 7f W M n S v w 8 2 s W M K t 1 G. W. BOWERS.

GRINDING MACHINE.

APPLIGATlON FILED 0110.2, 191

Patented Sept. 9, 191;;

MEL/$ JIM GEGZEGL BQKVEHS, 3F SOMERVILLE, MASSACHUSETTS;

GRINDING-MACHI1E Specificatim of lle ceers Za-tenfi. Patented g t, 9 191 3.

Appliczufisn filed December 2, 1912. *Eerial K0. 734,450.

- the same; Fig. 3 is an elevation from the m: that 1, GEORGE Bmvms, right if 1; Figs. 4 and 4 togeti'ier My he Uziited States, 31 resent m L udii ai seciion of the wincounty of plete nia-chii =ew61iting the frame Wfil'k air USE-USSi have immune: H Y; said figures being on a larger scv -1 l mprm'emem in v i. and. 2; Fig. represents a FLY hich the ifniin. 4 M 5 5 of Fig. 1, on a larger 9;. 6 rep Hits a section on line (E -i" n? 1, on :1 iargeu scale; F Y. and 9 represeni sctions (in lins T f, and. "35

rfi-speetively of Fig. 4; Fig.10 ism dciiaii phi-n 'ViQW of tus gripper for ma mvi of tin: grinding M1 or lap; Fig. 11 is an a ii;

Z1. "iififIRiL (if 11g ((1 Finding m end View Of {he chuck jaws m sic-m1: fair 15 bnmvn clamping the gi-ippi-r shown in Fig. 1

. it; 1' M98 and; may singiiegy ig 12 s 2V detail elevation. partly in (ilk .mfme; mad of rotary grinding i'iOi-l, 05 We grinding lap and its holding W m: mum-imp; spindle, zsnini'gcd; Figs. 12) and mni of the invention iiiu H are respv tively side Pivmiinn and 0nd in :wcognpm E m 1 View. vnim'gmi. of ihe chuck or work which for ,fiflillilifi f'i' m il is :ictUi P611 by the grinding lap; Fig. '15 "5 iii the jaws 0i. xiii: is an eii-miimi, (l\i11I f{Hi, of one (if many 1 hmvii iliii'ifjs. 023m? fnz'ms of gi'imii iflPS whivh may be the, (HUEJQC, il()-V- cmpin'vcii in Iii-ave- (if the one shown in Fig. :25 4 my if (v, the 7 1'2; Fag. "i6 is u. sefiiimiui ViOW illustrating:

sunning the mijnshnent (if .mipiq i the mmma fur 3 Work. rsiivii tiirmun hub.

r for ii;- irzii'zn zviei'vnw chai'acbsrs indicahl iih" Pith-1iin i 7 "p m sziuw m. i iinr pen-is m an of the ViPWS.

,' .0 i i? NZ: 1!" n'm-xiiine The i "'30 (5f the machine has and :i]'

rights 21. hiwh support :1 shaft 23 having a :111! miapmi L0 be driven by n. sniiniv o beam snui shaftiiai'iissi' 3W0 iwiirzii inwntiun i bk :1

wiiiimnt gun's .5 3. it in be Siam} mthat those as wuii as the pinions \(iii "1 9C! *i'mi'ith, are pre -r i as \Yiii as 11 ins: ive'z-ii. if;

one 0i \vi'iivii of the said hip. a'iic sides 0'1} the ('mrriug'e 2-30 are twoinnckets i0 ifi'wntion is in pm 0; :im'ks 28. 2!), which will he hereinafter I'uPzi-IIS {m7- mdicming the referred to more. in detail. As best shown amp-Reflux. m" the work. in Fig. 4-, cnne split bushings 31 are int 50 1 1 fiii my invention Consists; In Mi uel between the ventral buc (if 1119 "511 10 iw ii'I!.'l'fl ..Zi! Ziffil i siinii new pm wage 10 and the rod ad usting c0112, )2

. ini being ripioymi Em. iii'fjting the bushing 31 Grawing st Fig. 1, in cnm wnszzite or 'wmu'. 1am nut :18 being whine eniplm'wi fmi-ei'zi n2 the :ui ustnwnt if m ii bmzmisv of mid Q7. Mnunted on mid I'Od and at. nppw 39G- @mi uprights 21, The cam grooves iifi em pihh, the hub 37 being aion time shaft 33 b \(i. w iilzii a i i i rr mmemem: o I r v +2 sleeve 01 th s rwd x i f V he miter faces cone TL E58 63 worm wh 3 L i e nut 8- is insertchm-i: 17/

the ("hush a 29 screws H I 1 v I i". 1.1

310 A iilifidgi! said ""hdmw ii far enough iii-- perm uiisn of on: piece of i en in *amrk m an sny-ported by 151% carriage 7 Q 7 mark chm 3 mini! which meshes, with gear 115 hm 11,9, (he hm: hanged to retail: 95 (1* 2g. 2; he ud n the shaft T0. Anti- "n it and ihe adjacent lmhing an Kristian haiis i i carried by a ring (Figs. ,g 3Q which may he compssed of ab 1i and mounted between raceways T6, FOTUHQt miii'iiil such feit. Secured in 71 this 7 hearing including the raceways )3 Sim??? 59 btween the bushings 57 is 2?. 5 being interposed between the pinion 73 of 1 ii p215 -1 adapt-id i0 hfi driven by 4 ndie M1119 and f the bearing for the shaft pro- 1). Th? innymidmal recess 0i"%1(ir2d m Mock W. A washer 78 bears is cane-shame ai against the outer side of the pinion 73. A

F 4 and the other 0nd nut 75) is threaded upon the end portion of 4 the SiQQVQ shaft 70, said nut being cut away 12 ich is intaraaiiy i'ifQSdQCL As at its him)! and is present two shoulders 80 i 23, (he piei'e {if -f'f-Z)I'i whivh (Figs, 2 and 2), A pin 81 driveh tightly i ups-i: i3? ihai p mmpriws z: T into the leam shaft- With its inner end iaws be water of finish wifih the iniez'nal bare thereof pro- A a" Gm izmm: :apexes i jeas inih iii-s ellii-"zkwiiy portion of the nu w: in :119 mi as siee'x 'e rata liveiy supperts a slew:

'scn'bed, the sides at fin;

actuated so as to rotate the piece of wnrk a in :1 direction upposite t0 the iiu'evtiun of mm tion of Hie grinding element- Din-mg he grinding operation the Cfli'i'itlgfk I30 inn" i bzmk and forth an 15; to s it. Him we has ground iwfui-e siiu'ting the grinzulng opnei'w am. I have pmvuii-(i .2193133} hmwmn for adjusting the work grindiii tin} ape; [0 any IHWlt I 1 TH ti Huias .Jwwn in i i' bandage is m'iiigd with himraiiy 0X- hitei'iiiiy during iiic I Mimi 5-0 Um? Um (iiiiliitii if inn :wingg it; i 1 Cies'ii'mi (xii-m, of the rotating which is Sci :1 wean :ii'ip 11C 00 which bears a wear block HT mmmim! mi iize in, ipherical siwiped end of a sin-cw H8. sti'ucmi'c 0) Wear Muck the can-l mm huh imhi {he Carri ijl gflgflnlfli irli i at 55-:

h i. 21 (iiiiiiii 36. Tim ing can: @1- i I of a standard said swinging w in the 1111 iihi? pm 10:1 of i i" 0r lock: pin i126 i Mr A iifzzui 3,227 a ig'. by mains of which a, i pin may be; i drawn and ineriiid, The, upper end M the swinging carrier is formed with :2 d vided lie-ad 128, the two portions; of whish m 51012? 5 together y a clamp mare-w 229 with 1 iii ,nt frictiim to pre w Lm: surow 73% if an shifting out of its'udjiusiird T00 I object of this swinging (IlX'iiCi if tempnmriiy dispiaccthe smew ii if"? wear block H7 t :ubstantmiiy Hm line position (if Fig. s0 that 30 may be swung about the :wl ciently to rrmme tiw mi? i'i'mi i grocwe 36 wiiii which it i1? Engage m an able the cam hub 37 to be adjust??? Imagitildinally, as hmelnlwion: deuzriimfi, :30 bring infu positizizi 2L diffwen'. 132m that will an m impala Ci. reciprocating mu (Q51 m: t iii In order that flu can-rim 115, may he temp mu Ti iii;

M nding for; Ma in i111, Kipper sm'faui; of l I .1 E mwiii imam, 4. A. grinding mwil'iincz imvi'ig" :ii piviu-Laiiy I wh rl huie icr, means fm- 730- fi: Eng bmix ends v (iiiUQ-IIfiil'iC just how fa? ihe carriage snail wish incuri s (me radius.

":GHSMiiiji Erin and Operation of the masum :5 m practically almost $0 Lhh', and it is desirab Liz at; ihe attendii 11 21bit: Ln kn Mini. the grind lag; a L-iaiiw finish sf iaicrarly :30, T0 f ed a QUE-726E,

:z-iieri cuiininiciifl :i V in Fig. 55, a 723i; mnncstiiig said flZZlBZ' with a 12 4. A w imnnects the in tin mm of 173m :xiaaiiim; and a. 136 001mm- 3151c: ba ary with this mp :u 56 Q1? the: 1? 'age hiirh insulated i i i- 11ml ill mnftact amp fwd w as" law iiipmis a M. u widence imp-a ii winger PM in of the mm mecvimn vm'ii iii.

summi iii?! work rszszii'is for Eiiilw wrung and ii as}; i ii i312 lawn" postman of flu; umchine, but

21 gr ruling 2mm and miians 0w: ius mi r be C5 carried h grasping opposite ends of a grinding ele- .lnent and a work holder intermediate said spindles, said work holder having means for rotating it in a direetirm opposite to the direetion of rotation of the 'pindles.

4. A grinding roa -lime having a rotary Work holder means for rotatahly supporting and driving hoth ends of a grinding element extend: through the work carried by said h lder. and-means for travers ing said vvrrk holder in the direction of the axis of the grinding element.

5. A grindin machine having means b for rolatallly supporting lioth ends of a grinding element, a arriage having a rotary work holder. and means for imparting a variable araanrt of tr erse of said rar- I'iage in the dirertiei: of grinding rlement.

6. A grinding; iarhine having a fixed rod, a work-sopporting earriage longit iidinallv movable on said rod, means for automati eallv moving said carriage along the rod,

'and a rotary grinding element supported at both ends and ha. mg means for tensioning said element.

7. Agrinding-inaehine having a fixediod, a Work-supportin; oarriage. longitudinally movable on said rod, said earriage having a pin projecting theretronn a rotary earn en gaging said pin, and a rotary grinding element sllllptllttlt'l at both ends and having means for tens oning it.

A grindi z marliine having a fixed snpporta work-s11pporting carriage longitua, pin pr dinally onn'ahlp on said support, jerting tron said earriage a rotary huh having a plurality f ram grooves of dit ferent pitoln aid huh lining longitudinally adjust-ai e o permit the carriage to he aetnated by e her one o? said grooves. and means for nipportin; a grinding element to operate npv'm work. snppmted by said rarria 9. A grin ion hint: haiing a l ngitndjnally n -tah e w rk upport, means i porting a 'I-ndin inent to operate upon n' rk 'arried llv liid support, a rotary shaft having a srries of notches, a huh splineal n swirl shaft and having a plurality of earn gnomes oli different pitch, a latch the hub to engage either one of said notches. and a pin projecting from the spindles having means for the axis of the Work-support to engage either one of said eam grooves.

10. A grinding-niacinne having two rotary spindles in alinement, said spindles having means for holding opposite ends of a grinding element a sleeve shaft support ing one of said s 'iintllrs. and means for lonthe spindle mounted in said sleeve shaft 11. A- grinding'nnu-hine having two rotary spindles in alineinent, said spindles having means for holding opposite ends of a grinding element a sleeve shaft supporting one of said spindles. and means for 1on gitndinally ad'usi'ing the spindle mounted in said sleeve shaft, said means comprising a nutthreaded upon one end of the spin die and lneari'n; against the end of the sleeve shaft.

19. A grinding-machine having a sleeve shaft provided with a pin, a nut threaded on said sleeve shaft and having shoulders to engage said pin, a spindle mounted, in said sleeve shaft and having a threaded projecting: nd. a uni mounted on said threaded end of the spindle, the opposite end of said spindle having: means for holding one end of a grinding element. a rotary splndle l avinn means f r v'rippin g the other end of said grinding elenn-nt. and a \vorkholder lietiveen said spindles.

13. grinding inaehine having a fixed rod. :1 work-earriage m unted upon said rod and having a laterally extending pro jertion, an adjnsting serevv hearing; upon said projeetion to oscillate the (carriage upon said rod, and means for holding and to tating opposite ends of a grinding: element extending thrt' ugrh \vorh supported by said earriage 14. A grinding-nsaehine having: :1 fixed rod, liloeks mounted upon said rod and having lateral projerlions a Quide for the ljli'ojeetions of said idle -ks, said liloelrs heing adjustable along said rod, spindles mounted in said ilorks and having means for grasi ng opposite ends 0'? a grinding elementM-and a work support mounted on rod oetneeii said Lloeks.

In testimony,vvlie eof l have atlii-zed my signature, in presence of two v'it nesses.

GEORGE W. BOVVIIRS.

said 

